Question about 1999 GMC Jimmy

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Gmc jimmy 1999, fuel gauge reading empty, even

, fuel gauge reading empty, even when full

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  • Samantha Feb 06, 2010

    Is this tough to fix?

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  • Master
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The sending unit inside the tank has a open circuit that will not complete the signal to the dash gage. The tank will have to be dropped to replace this. The fuel pump is also a part of the sending unit. The part is not very cheap neither

Posted on Feb 06, 2010

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  • GMC Master
  • 2,030 Answers

The sending unit in the tank has gone bad or a wire is grounded out.

Posted on Feb 06, 2010

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  • Sean Wright
    Sean Wright Feb 07, 2010

    no not really....if ya need details let me know

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1 Answer

Gas gauge doesnt read gas amount


Gas gauge might need ajustment or re-placed. Won't hurt to get it checked out. Don't want to get stuck some where with no gas. Hope this helps.

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GMC 1997 Sierra Fuel gauge needle does not read full, it hovers on 1/4 or empty even when it's topped off. Could it be the float?


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Have a 2001 gmc jimmy...drove home gas gauge read 1/4 tank..next day cranked over but wont start..gas gauge reads empty...put $10.00 from spare gas can..cranked over but no start ..gas gauge still reads...


chevy and gmc trucks have an on going problem with this,turn the key on,and get a rubber mallot or a hammer and hit the bottom of the fuel tank a couple of times,this will unstick something in the fuel pump/sending unit.

Jan 05, 2010 | 2001 GMC Jimmy

1 Answer

Erratic fuel gauge on a 1999 Jimmy


It IS the sending unit. There's just no other explanation. If it gave you no reading or never changed then it could be other things but the other things it would be would keep you from getting any reading at all. The person who put the new one in either damaged the slide, which isn't hard to do, or didn't connect it right. Take it back to them and make them fix it OR the part could have been bad from the store. My friends at NAPA say as many as one in ten new parts aren't any good. If you used a used part then it might just be another worn out sending unit. I usually try very hard to not be so "matter of fact" but I can't come up with any scenario where your problem could be anything but the sending unit. If I end up being wrong, I'd love to know because I tried as hard as I could to blame something other than the s. unit. Am curious to see if I'm right. Best of luck!

Nov 29, 2009 | 1997 GMC Jimmy

1 Answer

1999 gmc jimmy fuel gauge reads empty, pulled fuel tank test sending unit and it ohms out ok??Any wiring issues to look for


look for a short in the sending wiring, empty means the circuit is closed, open circuit full

Nov 28, 2009 | 1999 GMC Jimmy

1 Answer

1993 Jeep Grand Cherokee gas gauge reads empty but tank is full.


Fuel level sending units are known to go bad on these.

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Even with a full tank my 2005 Envoy XUV fuel light stays on and fuel gauge marks empty


u need to change this gauge or try to dissasseble and clean it very well then try to install it back again

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the fuel level sensor inside your gas tank might be defective
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